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UNITED -i STATES GEORGE E. MILLEN, 0E HULL, QUEBEC, CANADA, AssIeNoE TO EZRA BUTLER EDDY, OF SAME PLACE.

WASH-BOARD.

SPECIFICATION forming part of Letters Patent No. 223,600, dated January 13, 1880. Application led June 18, 1879. Patented in Canada, April 17, 1879.

To all whom t may concern Be it known that I, GEORGE HENRY MIL- LEN, of Hull, in the county of Ottawa, in the Province of Quebec, Canada, have invented Certain new and useful Improvements in Wash- Boards; and I do hereby declare that the following is a full, clear, and exact description of the same.

This invention relates to the peculiar formation ofthe friction-surface of the metallic plate for wash-boards, both sides of the plate being" uniformly alike; and my invention consist-s of a metallic plate Vchanneled crosswise with square-sided corrugations, the raised face of the corrugations slightly indented crosswise at suitable distances, whereby crowning parallelogrammic forms are produced to constitute the frictional surface.

Figure is afront elevation of a wash-board having my improved plate. Fig. 2 is a longitudinal section of the same.

A are the depressions or channels, and B the raised portions of the plate, the indentations and elevations being of uniform width. The sunken portions A form channels for holding copiously the exnded wat-er, which is disturbed by the movement of the clothes in Washing, and thus causes rapid cleansing.

The raised and sunken corrugations are uniform on both sides of the plate, and extend crosswise ofthe wash-boar The raised surfaces B are sharply and slightly indented transversely to the channels at suitable distances apart, whereby rows of parallelogrammic sections d are formed.

of the plate, and it will be observed that each i section of the surface dips slightly below the plane level. This is accomplished by deepening the channels A on one side more than on the other, whereby the upper side of the corrugations Will be raised more than the lower side, and by being slightlyindented crosswise a greater prominence 1s given to the upper edge of each section than to the lower edge. Thus the inden tations a will be greater on the upper part than on the lower part of each section d.

The object of giving an inclination to each section dis to cause greater friction on the downward than on the upward rub.

The plate is inserted in the wash-board frame O in the usual manner.

I claim as my invention- A wash-board surface consisting ot' approximately rectangular channels A, having one side higher than the other, and intervening inclined elevations, B, in parallel lines, divided in to parallelogramxnic sections d by transverse V-shaped indentations a at suitable intervals, as and for the purpose set forth.

GEO. H. MILLEN. 

